?? 詞語組成解析
boulder
['b?uld?]
n. 卵石，圓石;巨礫，冰礫;漂礫;
fern
[f?:n]
n. <植>羊齒植物，蕨類植物;
??? 情景例句
Otherwise, they'll not be considered.
否則不予受理。
What's in it for me?
我有什么好處？
Can I give him a message?
我可以給他捎個口信嗎？